﻿//  Copyright 2019 Google Inc. All Rights Reserved.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.

using Microsoft.Win32.SafeHandles;
using System;

namespace NtApiDotNet
{
    /// <summary>
    /// Safe handle for a port section.
    /// </summary>
    public class SafeAlpcPortSectionHandle : SafeHandleZeroOrMinusOneIsInvalid
    {
        internal SafeAlpcPortSectionHandle(AlpcHandle handle, bool owns_handle, NtAlpc port) : base(owns_handle)
        {
            SetHandle(new IntPtr(handle.Value));
            Port = port;
        }

        internal NtAlpc Port { get; }

        /// <summary>
        /// Release handle.
        /// </summary>
        /// <returns>True if handle released successfully.</returns>
        protected override bool ReleaseHandle()
        {
            if (Port == null || Port.Handle.IsClosed)
            {
                return false;
            }
            return NtSystemCalls.NtAlpcDeletePortSection(Port.Handle,
                AlpcDeletePortSectionFlags.None, handle.ToInt64()).IsSuccess();
        }
    }
}
